{"passport":{"unfragile":{"@version":"1.0","version":"2026-05","artifact":{"id":"awesome-hal","slug":"hal","name":"HAL","type":"repo","url":"https://github.com/dean/HAL","page_url":"https://unfragile.ai/hal","categories":["cli-tools"],"tags":[],"pricing":{"model":"open_source","free":true,"starting_price":null},"status":"active","verified":false},"capabilities":[{"id":"awesome-hal__cap_0","uri":"capability://tool.use.integration.http.method.execution.with.all.7.standard.verbs","name":"http method execution with all 7 standard verbs","description":"Executes HTTP requests using all seven standard HTTP methods (GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS) with unified request/response handling. The toolkit abstracts method-specific semantics while maintaining protocol compliance, allowing developers to switch between methods without changing request construction patterns. Each method maps to its corresponding HTTP verb with proper header and body handling conventions.","intents":["Execute RESTful API calls across all standard HTTP methods from a single toolkit","Switch between HTTP verbs (GET to POST, PUT to PATCH) without rewriting request logic","Build HTTP clients that support the full HTTP method spectrum for comprehensive API coverage"],"best_for":["API integration developers building multi-method REST clients","Backend engineers testing HTTP endpoints across all verb types","Teams building HTTP abstraction layers that need method flexibility"],"limitations":["No built-in HTTP/2 server push support — limited to request/response patterns","Method semantics (idempotency, caching) are not enforced by the toolkit — developer responsibility","No automatic method fallback or negotiation if a server doesn't support a requested verb"],"requires":["Network connectivity to target HTTP endpoint","Valid HTTP method support on the target server"],"input_types":["HTTP method name (GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS)","URL string","Request headers (optional)","Request body (optional, for POST/PUT/PATCH)"],"output_types":["HTTP response status code","Response headers","Response body (raw or parsed)"],"categories":["tool-use-integration","http-client"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-hal__cap_1","uri":"capability://safety.moderation.secret.substitution.in.request.payloads.and.headers","name":"secret substitution in request payloads and headers","description":"Replaces placeholder tokens in request bodies, headers, and URLs with secret values from a secure store or environment variables before sending requests. The toolkit scans request templates for marked placeholders (likely using a pattern like {{SECRET_NAME}} or similar) and performs string substitution with actual secret values, preventing secrets from being hardcoded in request definitions. This enables safe request templating where sensitive credentials are injected at execution time.","intents":["Inject API keys, tokens, and passwords into requests without hardcoding them in request definitions","Parameterize requests with environment-specific secrets (dev vs prod credentials)","Build reusable request templates that work across different secret contexts"],"best_for":["DevOps engineers managing API credentials across environments","Teams building HTTP automation that must handle sensitive data securely","Developers creating request templates that need to work with multiple secret sources"],"limitations":["Secret substitution happens at request time — no compile-time validation of placeholder names","No built-in secret rotation or expiration handling — requires external secret management","Substitution is string-based — no type-aware secret handling (e.g., JSON encoding of secret values)","No audit logging of which secrets were used in which requests by default"],"requires":["Secret values available in environment variables or a configured secret store","Request templates with marked placeholders for secrets","Access to secret source (environment, file, or API)"],"input_types":["Request template with placeholder tokens (string)","Secret name or key (string)","Secret value source (environment variable, file, or API)"],"output_types":["Request with substituted secret values (string)","HTTP request ready for transmission"],"categories":["safety-moderation","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-hal__cap_2","uri":"capability://data.processing.analysis.multi.format.response.parsing.json.xml.html.form.data","name":"multi-format response parsing (json, xml, html, form data)","description":"Automatically detects and parses HTTP response bodies in multiple content formats including JSON, XML, HTML, and form-encoded data. The toolkit examines the Content-Type header and response body structure to determine the format, then applies the appropriate parser to convert raw response text into structured data. This enables developers to work with parsed response objects rather than raw strings, regardless of the API's response format.","intents":["Parse JSON responses from modern REST APIs into JavaScript/Python objects","Extract data from XML-based SOAP or legacy APIs without manual string parsing","Handle HTML responses from web scraping or form-based APIs","Work with form-encoded responses from traditional web services"],"best_for":["Integration developers working with heterogeneous APIs using different response formats","Teams building adapters for legacy SOAP/XML services alongside modern REST APIs","Developers needing automatic format detection without explicit parser selection"],"limitations":["Format detection relies on Content-Type headers — malformed or missing headers may cause parsing failures","No custom parser registration — limited to built-in formats (JSON, XML, HTML, form data)","HTML parsing is basic — no CSS selector or XPath support for targeted data extraction","Large response bodies may cause memory issues during parsing — no streaming parser support"],"requires":["HTTP response with valid Content-Type header or detectable format signature","Response body in one of the supported formats (JSON, XML, HTML, form-encoded)"],"input_types":["HTTP response body (raw string or bytes)","Content-Type header (string, optional for format detection)"],"output_types":["Parsed object (JSON → object, XML → DOM/tree, HTML → DOM, form data → key-value pairs)","Structured data ready for application logic"],"categories":["data-processing-analysis","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-hal__cap_3","uri":"capability://safety.moderation.comprehensive.http.error.handling.and.status.code.interpretation","name":"comprehensive http error handling and status code interpretation","description":"Captures, categorizes, and interprets HTTP error responses based on status codes and response content, providing structured error information for application-level error handling. The toolkit maps HTTP status codes (4xx, 5xx) to semantic error categories (client error, server error, timeout, etc.) and extracts error details from response bodies when available. This enables developers to implement retry logic, fallback strategies, and user-friendly error messages based on the actual cause of failure.","intents":["Distinguish between client errors (400, 401, 403, 404) and server errors (500, 502, 503) to implement appropriate retry strategies","Extract error messages from API responses to display meaningful feedback to users","Implement exponential backoff or circuit breaker patterns based on error type","Log and monitor API failures with structured error information"],"best_for":["Backend engineers building resilient HTTP clients with intelligent retry logic","Teams implementing observability and error tracking for API integrations","Developers creating user-facing applications that need meaningful error messages from APIs"],"limitations":["Error interpretation relies on standard HTTP status codes — non-standard or undocumented status codes may not be handled correctly","Error message extraction depends on API response format — inconsistent error response structures may require custom parsing","No built-in retry logic — developers must implement their own retry strategies based on error categories","Timeout handling depends on underlying HTTP client configuration — not all timeout scenarios may be caught"],"requires":["HTTP response with status code","Optional error details in response body (format-dependent)"],"input_types":["HTTP response status code (integer)","HTTP response body (string or parsed object)","Response headers (optional, for additional context)"],"output_types":["Error object with status code, category, and message","Structured error information for application handling","Boolean indicating if error is retryable"],"categories":["safety-moderation","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-hal__cap_4","uri":"capability://tool.use.integration.request.header.management.and.customization","name":"request header management and customization","description":"Allows developers to set, modify, and manage HTTP request headers including Content-Type, Authorization, User-Agent, and custom headers. The toolkit provides a header management interface that handles header normalization (case-insensitivity), prevents duplicate headers, and ensures proper header formatting according to HTTP specifications. Developers can define default headers, override headers per-request, and inherit headers from templates or configurations.","intents":["Set Authorization headers with API keys, Bearer tokens, or custom auth schemes","Configure Content-Type and Accept headers for different request/response formats","Add custom headers required by specific APIs (e.g., X-API-Key, X-Request-ID)","Manage User-Agent and other client identification headers"],"best_for":["API integration developers working with APIs requiring custom headers","Teams building HTTP clients that need consistent header management across requests","Developers implementing authentication schemes that rely on headers"],"limitations":["No automatic header validation — invalid header names or values may cause request failures","Header precedence (default vs override) must be explicitly managed by developers","No built-in support for header compression or encoding — raw header values only","Case-sensitivity handling depends on implementation — may not fully normalize header names"],"requires":["HTTP request object or header dictionary","Valid header names and values according to HTTP specifications"],"input_types":["Header name (string)","Header value (string)","Header dictionary or map (object)"],"output_types":["HTTP request with configured headers","Header dictionary for inspection or modification"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-hal__cap_5","uri":"capability://data.processing.analysis.request.body.serialization.for.multiple.content.types","name":"request body serialization for multiple content types","description":"Serializes request bodies into appropriate formats (JSON, XML, form-encoded, raw text) based on the specified Content-Type or developer preference. The toolkit handles encoding of complex data structures (objects, arrays, nested data) into the target format, manages character encoding (UTF-8, etc.), and ensures proper formatting according to content type specifications. This enables developers to send structured data without manually constructing request bodies.","intents":["Send JSON objects in POST/PUT requests without manual JSON.stringify() calls","Serialize form data for application/x-www-form-urlencoded requests","Construct XML request bodies for SOAP or XML-based APIs","Handle multipart form data for file uploads with metadata"],"best_for":["API integration developers sending structured data to REST/SOAP endpoints","Teams building HTTP clients that need to work with multiple serialization formats","Developers implementing form submissions or file uploads via HTTP"],"limitations":["Serialization assumes well-formed input data — circular references or unsupported types may cause errors","No custom serializer registration — limited to built-in formats","Large request bodies may cause memory issues during serialization — no streaming serializer support","Character encoding is fixed (typically UTF-8) — no support for other encodings"],"requires":["Data to serialize (object, array, string, or file)","Target content type or format specification"],"input_types":["JavaScript/Python object or array","String or raw data","File or binary data","Content-Type specification (string)"],"output_types":["Serialized request body (string or bytes)","HTTP request ready for transmission"],"categories":["data-processing-analysis","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-hal__cap_6","uri":"capability://tool.use.integration.url.construction.and.query.parameter.management","name":"url construction and query parameter management","description":"Builds and manages URLs with support for base URLs, path segments, and query parameters. The toolkit handles URL encoding of parameters, prevents duplicate query strings, manages parameter precedence, and validates URL structure. Developers can construct URLs from components (scheme, host, path, query) or modify existing URLs by adding/removing parameters, without manual string concatenation or encoding.","intents":["Build URLs with query parameters without manual URL encoding or string concatenation","Manage base URLs and path segments for API endpoints","Add or override query parameters in existing URLs","Handle special characters and spaces in parameter values"],"best_for":["API integration developers building dynamic URLs for REST endpoints","Teams managing multiple API base URLs and path structures","Developers implementing pagination, filtering, or search with query parameters"],"limitations":["URL encoding may not handle all special characters correctly — edge cases with international characters possible","No URL validation beyond basic structure checks — invalid URLs may not be caught","Parameter ordering is not guaranteed — APIs expecting specific parameter order may fail","No support for URL fragments (#) or complex query string structures"],"requires":["Base URL or URL components (scheme, host, path)","Query parameters as key-value pairs (optional)"],"input_types":["Base URL (string)","Path segments (string or array)","Query parameters (object or key-value pairs)"],"output_types":["Complete URL (string)","URL object with components"],"categories":["tool-use-integration","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-hal__cap_7","uri":"capability://automation.workflow.request.templating.and.reusability","name":"request templating and reusability","description":"Enables developers to define request templates with placeholders for dynamic values (URLs, headers, bodies, secrets) that can be reused across multiple requests. Templates support variable substitution, inheritance, and composition, allowing common request patterns to be defined once and instantiated multiple times with different parameters. This reduces duplication and makes request definitions more maintainable.","intents":["Define reusable request templates for common API endpoints","Create parameterized requests that work with different values (IDs, filters, credentials)","Share request templates across team members or projects","Reduce duplication in request definitions for similar API calls"],"best_for":["Teams building HTTP automation with many similar requests","Developers creating request libraries or SDKs for specific APIs","Organizations standardizing HTTP request patterns across projects"],"limitations":["Template syntax and variable substitution must be learned — adds complexity vs inline requests","No compile-time validation of template placeholders — missing variables only caught at runtime","Template inheritance and composition may create complex dependency chains","No built-in template versioning or migration tools"],"requires":["Template definition with placeholder syntax","Values for all required placeholders at request time"],"input_types":["Template definition (string or object)","Variable values (object or key-value pairs)"],"output_types":["Instantiated request with substituted values","HTTP request ready for transmission"],"categories":["automation-workflow","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-hal__cap_8","uri":"capability://automation.workflow.response.caching.and.conditional.requests","name":"response caching and conditional requests","description":"Implements HTTP caching mechanisms including ETag and Last-Modified header support for conditional requests (If-None-Match, If-Modified-Since). The toolkit stores responses with cache metadata, compares ETags or modification times on subsequent requests, and returns cached responses when the server indicates no changes (304 Not Modified). This reduces bandwidth usage and improves performance for APIs that support conditional requests.","intents":["Reduce API calls by caching responses and using conditional requests","Implement efficient polling of APIs that support ETags or Last-Modified headers","Improve performance for read-heavy workloads with proper cache validation","Respect API rate limits by avoiding unnecessary full responses"],"best_for":["Developers building efficient API clients that respect caching headers","Teams managing high-volume API integrations with rate limiting concerns","Applications polling APIs frequently and needing to minimize bandwidth"],"limitations":["Caching only works if the API supports ETag or Last-Modified headers — many APIs don't","Cache storage is in-memory by default — no persistence across application restarts","No cache invalidation strategies beyond server-provided headers — manual invalidation required","Cache size is unbounded — large numbers of cached responses may consume significant memory"],"requires":["API that supports ETag or Last-Modified headers","Cache storage mechanism (in-memory or external)"],"input_types":["HTTP request","Previous response with ETag or Last-Modified header"],"output_types":["Cached response (if unchanged) or new response (if changed)","HTTP status code (200 or 304)"],"categories":["automation-workflow","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"awesome-hal__cap_9","uri":"capability://automation.workflow.request.timeout.and.retry.configuration","name":"request timeout and retry configuration","description":"Configures timeout limits for HTTP requests and implements retry logic with exponential backoff, jitter, and configurable retry conditions. The toolkit allows developers to specify connection timeouts, read timeouts, and total request timeouts, and automatically retries failed requests based on configurable conditions (specific status codes, network errors, etc.). This improves reliability for flaky networks or temporarily unavailable services.","intents":["Set timeout limits to prevent requests from hanging indefinitely","Automatically retry failed requests with exponential backoff","Handle temporary service unavailability (5xx errors) gracefully","Improve reliability for unreliable networks or services"],"best_for":["Backend engineers building resilient API clients for production systems","Teams integrating with unreliable or rate-limited APIs","Developers implementing long-running HTTP operations with timeout protection"],"limitations":["Retry logic is not idempotent-aware — may retry non-idempotent operations (POST, DELETE) causing side effects","Exponential backoff calculation may not be optimal for all scenarios — configurable but requires tuning","No circuit breaker pattern — continuous retries may overwhelm failing services","Timeout configuration is global or per-request — no fine-grained timeout per operation type"],"requires":["Timeout values (milliseconds or seconds)","Retry configuration (max attempts, backoff strategy, retry conditions)"],"input_types":["Timeout duration (number)","Retry configuration object (max attempts, backoff multiplier, retry conditions)"],"output_types":["HTTP response (after successful request or final retry failure)","Timeout or retry error if all attempts fail"],"categories":["automation-workflow","safety-moderation"],"confidence":0.5,"matches":0,"success_rate":0}],"trust":{"score":28,"verified":false,"data_access_risk":"high","permissions":["Network connectivity to target HTTP endpoint","Valid HTTP method support on the target server","Secret values available in environment variables or a configured secret store","Request templates with marked placeholders for secrets","Access to secret source (environment, file, or API)","HTTP response with valid Content-Type header or detectable format signature","Response body in one of the supported formats (JSON, XML, HTML, form-encoded)","HTTP response with status code","Optional error details in response body (format-dependent)","HTTP request object or header dictionary"],"failure_modes":["No built-in HTTP/2 server push support — limited to request/response patterns","Method semantics (idempotency, caching) are not enforced by the toolkit — developer responsibility","No automatic method fallback or negotiation if a server doesn't support a requested verb","Secret substitution happens at request time — no compile-time validation of placeholder names","No built-in secret rotation or expiration handling — requires external secret management","Substitution is string-based — no type-aware secret handling (e.g., JSON encoding of secret values)","No audit logging of which secrets were used in which requests by default","Format detection relies on Content-Type headers — malformed or missing headers may cause parsing failures","No custom parser registration — limited to built-in formats (JSON, XML, HTML, form data)","HTML parsing is basic — no CSS selector or XPath support for targeted data extraction","builder identity is not verified yet","no observed match outcomes yet"],"rank_breakdown":{"adoption":0.05,"quality":0.45,"ecosystem":0.39999999999999997,"match_graph":0.25,"freshness":0.75,"weights":{"adoption":0.3,"quality":0.2,"ecosystem":0.15,"match_graph":0.3,"freshness":0.05}},"observed_outcomes":{"matches":0,"success_rate":0,"avg_confidence":0,"top_intents":[],"last_matched_at":null},"maintenance":{"status":"active","updated_at":"2026-06-17T09:51:03.041Z","last_scraped_at":"2026-05-03T14:00:15.503Z","last_commit":null},"community":{"stars":null,"forks":null,"weekly_downloads":null,"model_downloads":null,"model_likes":null}},"distribution":{"claim_url":"https://unfragile.ai/submit?claim=hal","compare_url":"https://unfragile.ai/compare?artifact=hal"}},"signature":"NG0j7O2aTJDQp8VXfCjoIeuRKEwUD73cS0kBDxUCcjevGyimoMtaz4plZgqC/HmMCpi1vlWemTEIvJRRS00ZBg==","signedAt":"2026-06-21T19:26:21.491Z","signedBy":"unfragile.ai","version":1},"_links":{"self":"https://unfragile.ai/api/v1/passport/hal","artifact":"https://unfragile.ai/hal","verify":"https://unfragile.ai/api/v1/verify?slug=hal","publicKey":"https://unfragile.ai/api/v1/trust-passport-public-key","spec":"https://unfragile.ai/trust","schema":"https://unfragile.ai/schema.json","docs":"https://unfragile.ai/docs"}}